Gas-pressure regulator.



PATENTED JULY 5, 1904.

R. A. GILLBSPIE. GAS PRESSURE REGULATOR.

APPLIUATION FILED DEC. 10; 1903.

N0 MODEL.

Inventor UNITED STATES Patented July 5, 1904.

P TENT OFFICE.

ROBERT A. GILLESPIE, OF ALLEGHENY, PENNSYLVANIA, ASSIGNOR TO GILLESPIE MANUFACTURING COMPANY, OF ALLEGHENY, PENNSYL- VANIA, A CORPORATION OF PENNSYLVANIA.

GAS-PRESSURE REGULATOR.

SPECIFICATION forming part of Letters Patent No. 764,186, dated July 5, 1904. Application filed December 10, 1903. Serial No. 184,543. (No model.)

1'0 alt whom, it may concern.-

Be it known that I, ROBERT A. GILLEsrIE, a citizen of the United States, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Gas-Pressure Regulators, of which the following is aspec ification, reference being had therein to the accompanying drawings.

The primary object of the invention is to provide an improved lever connection between the diaphragm and valve of a gas-pressure regulator.

The invention consists in the novel structural features and combination of parts hereinafter fully described and claimed, and illustrated by the accompanying drawings, where- 1n- Figure 1 is a vertical sectional view ofa regulator constructed in accordance with my invention. Figs. 2, 3, and 4c are detail views.

Referring to the drawings, 2 designates the valve-body, 3 being the high-pressure or inlet side thereof, and 4, the low-pressure or outlet side.

5 5 are the valve-seats, and 6 and 7 the valve members of the balanced valve, which is suspended on stem 8, projecting upward into diaphragm-chamber 9. Fulcrumed inlthe latter on posts 10 10 are the toggle-levers 11 11, which at their point of intersection have the pin-andslot connection 12 with the extremity of stem 8. Links 13 13 connect the outer extremities of levers 11 with center bolt 14 of the diaphragm 15, the latter being clamped between the upper edge of chamber 9 and dome 9 thereof in usual manner. In the central extension 16 of dome 9 is the verticallyadjust-' For uniting valve-body 2 and chamber 9 I thread their registering orifices to receive the threaded coupling-sleeve 21, which together with an interposed packing 21 forms a strong and permanent union and seal. By holding either of the united members and turning the other member the parts may be readily connectedor disconnected, as required.

In assembling the parts, valve member 6 is inserted through the bottom capped-opening 22 of body 2 and is formed, preferably, with a threaded recess 6 to provide an adjustment for the valve-connecting stem 23, the upper end of the latter having the lug-and-pin connection 23 with valve member 7 while stem 8 is removably secured to the upper side of the latter by the socket-and-pin connection 7 Thus the valve members may be accurately adjusted or spaced with relation to their seats. Each of valve members 6 and 7 is formed with annular groove 24 to receive packing 24 thus effectually sealing the valve when closed. While I show a double or balanced valve, I do not confine myself thereto.

In operation, when the inflowing pressure does not exceed the desired outflowing pres:

sure, as determined by the spring adjustment, the valve is wide open, as shown in dotted lines, Fig. 1, and affords an unobstructed passage for the gas. When the desired outflowing pressure is exceeded by the supply-pressure, diaphragm 15 is raised by the gas-pressure therebeneath and partially closes the valve, thereby so diminishing the supply as to maintain the desired pressure in part 4 of the valve-body, also in chamber 9. The resistance ofiered by the diaphragm may be so varied by the adjustable spring at its upper side as to provide a wide range of pressureadjustments for the regulator. Without the spring the weight of the diaphragm and levers is suffioient to maintain a low pressure, sayof five or six ounces.

With the interposed levers operatively connecting the valve and diaphragm the lifting power of the latter is much greater than it would be if directly connected to the valve, so that a diaphragm of small area suffices,

thereby reducing the size and cost of the regulator as compared with those now in use.

I claim I 1. In a pressure-regulator, a valve, a diaphragm, togglelevers fulcrumed at their lower ends and at their upper ends connected to the diaphragm, and a valve-operating connection with the levers at the point where they cross or intersect. i

2. In a pressure-regulator, a chamber, a valve, a diaphragm, crossed levers fulcrumed at one end and at their opposite ends operatively connected to the diaphragm, and an operative connection between the valve and the levers at the point where they cross or intersect.

3. In a pressure-regulator, a diaphragmchamber, a diaphragm, oppositely-disposed levers crossing each other between their ends and at their lower ends having fixed fulcrums and at their upper ends operatively connected to the diaphragm, and a valve operatively connected to the levers at the point where they cross or intersect.

4. In a pressure-regulator, a diaphragmchamber, a valve, a diaphragm, oppositelydisposed levers having fixed fulcrums at their lower ends and crossing each other between their ends, their point of intersection being in line with the valve, a stem extending from the valve and connecting with the levers at said point of intersection, and a connection between the upper ends of the levers and the diaphragm.

5. In a pressure-regulator, communicating valve and diaphragm chambers, a valve, a diaphragm, oppositely-disposed levers crossing each other at a point in line with the valve and having fixed fulcrums in the bottom of the diaphragm chamber, the levers being slotted where they intersect, a stem extending from the valve and connecting with the lever-slots, and an operative connection between the upper ends of the levers and the diaphragm.

In testimony whereof I aflix my signature in presence of two witnesses.

ROBERT A. GILLESPIE.

I/Vitnesses: V

J. M. NEsBI'r, EDWIN JOHNSON. 

